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Changes to Goodwill by Acquisition (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2016
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | $ 652
Working Capital Adjustments |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | 557
Acquisition Related Tax Adjustments |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | (315)
Property, Plant and Equipment Final Fair Value Adjustments |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | 410
Dave’s Killer Bread |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions | $ 200 | 155
Dave’s Killer Bread | Working Capital Adjustments |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | 60
Dave’s Killer Bread | Acquisition Related Tax Adjustments |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | (315)
Dave’s Killer Bread | Property, Plant and Equipment Final Fair Value Adjustments |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | 410
Alpine Valley Bread Company |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | 497
Alpine Valley Bread Company | Working Capital Adjustments |  |
Goodwill [Line Items] |  |
Change in goodwill related to acquisitions |  | $ 497

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